Same here, but for me it usually isnt by choice its according my my contract. I've always been pretty lucky since the 4S was flawless compared to the 4 and hopefully the 5S fixes whatever paint issues the 5 had
Mine is due to the contract as well. I never got the first iPhone as the edge network was a bummer. So then I got the iPhone 3GS and now the 4S, next will be 5S.